Home / 12,938.80-17,848.92-8,407.84

Finding the Fourth Proportional to 12,938.80, 17,848.92 and 8,407.84

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Solution

The fourth proportional to 12,938.80, 17,848.92 and 8,407.84 is: 11,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.80 : 17,848.92 = 8,407.84 : x
  2. Step 2: Convert to fraction form
    12,938.80/17,848.92 = 8,407.84/x
  3. Step 3: Cross multiply
    12,938.80x = 17,848.92 × 8,407.84
  4. Step 4: Simplify right side
    12,938.80x = 150,070,863.53
  5. Step 5: Solve for x
    x = 150,070,863.53/12,938.80
  6. Step 6: Final answer
    x = 11,598.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.